Automatic gravity-stop pivot mechanism.



- J. W. YATES AUTOMATIC GRAVITY STOP PIVOT MEGHANISM.

v uruouxon mum JAN. 3, 910. 980,386.

Patented Jan. 3,1911.

- owing to the fact that the pivots and pivot-- os sso.

Specification of Letters Patent.

UNITED STAiEi-BATENT OFFICE.

JOHN W. YATES, OF NEW YORK, N. Y.

AUTOMATIC GRAVITY-STOP PIVOT MECLIANISM.

Patented Jan. 3, 191 1.

Application filed January 3', 1910. Serial No. 536,116.

To all whom it may concern:

Be it known that I, JoiiN YATES, a citizen of the United States, residing at New York, in the county of hewYork and State of New York, have invented certain new and useful Improvements in Automatic Gravity- Stop Pivot Mechanism, of which the following is a full, clear, and exact specification;

the opening movement of the sash is limited to a predetermined distance, and which when released permits the sash to close automatically and. by gravity so as to cut 011' draft through the building. Preferably these win dows are held open by chains provided with fusible links so thatupon an excessive rise in temperature, due to a fire or other similar cause, they are released and swung into closed position automatically and by gravity plates are slightly above the horizontal center of the sash and frame. \Vhile I have not shown any means for holding the sash in open position, I wish it understood that 1 may use. any automatic means for releasing the sash when the same is in an open position, upon a predetermined rise in temperature, the universal means as hereinbefore stated being a chain provided with one or more fusible links.

Another object of the invention is to pro.-

vide means whereby the limiting 'means above mentioned may be rendered inoperative so as to permit the window or sash to be swung open to a greater degree for washin or any other purpose.

with these and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be described and claimed.

In the accompanying drawings, Figure 1 is a front elevation, partly broken away, and Fig. 2 is'a sectional view taken on line 2-2 of Fig. 1, illustrating the sash in open pivots 3 and l, which are fastened to the sash by means of bolts, screws or rivets 5. The pivots 3 and L are provided with slots or elongated holes :6 by means of which the pivots may be adjusted on the sash so as to properly hang the latter in the frame-2. lhe pivot 4.- is provided with a projection 7 integral with the base of the pivot. and a hinge stud 8 at right-anglesto the base. Pivot'blades 9 andfO are fastened to the frame 9. by means of rivets, belts or screws, the pivot-blade'ltl being provided with a socket 11 for the reception of the hinge stud 8. The pivot-plate 10 is also provided with a we ghted stop 12 journaled at 13 to the lower end of the pivot-plate 10 and having an upwardly-e tending projection 14: adapted to cooperatewith the projection 7.0m the pivot 4.- for limiting the predetermined opening movement of the window or sash 1. The weighted stop 12 is also provided with a forked lower portion, one member 15 of which abuts the base of the pivot-plate 10 for the purpose of keeping the upwardly extending projection l-t norn'ially in the path of the projection 9 on the pivot 4:.

\Vhen it is desired to reverse the window or sash l for washing or cleaning the same this may be done by moving the weighted stop 19. out of its normal position by hand to the dotted line position 1(1. After the reversed side of the window has been cleaned, the window manually and by gravity will swing to its normal or closed position in the frame 2, and the stop 12, due to the predetermined weight of the member 17 oftthe lower portion of said stop, will also automatically parts of fire-proof windows be of non-corrosive metals To strengthen the sash and frame and to provide'a substantial foundation for the ivots and pivot-plates, reinforeingplates Fnot sash shown) are placed on the inside of the Underwriters, which requires that hinge E hereto.

any-of the advantages of the invention above described and claimed in the claim appended Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

As a new article of manufacture, a window hinge device composed v of a an adjustable pivot fastened to the sash, said pivot consisting of 'a base, a projection integral with said base and ahinge stud extending atright angles to said projection, and a cooperating pivot-plate fastened to the frame, said pivotplate consisting of a base provided with a socket for receiving the hinge stud of the pivot, a-stop journaled to said base and havingan upwardly-extending portion, and a forked lower portion, one of the members of said forked. portion-"being of a predetermined weight in order to normally hold the second member of said forked portion in contact with the base of said pivot-plate, therebyv keeping the upwardly-extending portion of said sto normally in the path of the projection on said projection for limiting the opening movement of the window to a predeternnned distance.

In testimony whereof, I afiixmy signature in pres'ence of two witnesses. JOHN YATES.

Vvitnesses:

IVAN Komcsnnnc, Manna DEELY.

e pivot to cooperate with 

